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???
03/29/12 06:20
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#186943 - Inductive VS resistive characteristics
Responding to: ???'s previous message
for Resistive load the voltage and current waveform are almost identical

on the other hand, a wire wound transformer is an inductive load and the currents tends to lag behind the voltage. once triggering a triac or thyristor relies on the current flowing through the device to keep it conducting. should the current fall below the device's threshold level it will turn off or stop conducting. however with an inductive load the current lags behind the voltage so it is possible that the current through
the triac or thyristor threshold level before the triggering pulse ends. output result is unacceptable.
to avoid this, use hard firing technique for inductive load. this ensures that the triger pulse is maintained for a long enough period of time to ensure that current reaches the device's threshold level

List of 18 messages in thread
TopicAuthorDate
Gate pulse for anti paraller Thyristor configuration      Yagnesh Mehta      03/29/12 01:03      
   Inductive VS resistive characteristics      Yagnesh Mehta      03/29/12 06:20      
    :( not even single person is interested in this post......      Yagnesh Mehta      04/04/12 04:58      
      what?      Stefan KAnev      04/04/12 14:43      
      Power Electronics      KONSTANTINOS L. ANGELIS      04/04/12 14:49      
   Thank for Replay and your interest      Yagnesh Mehta      04/05/12 00:07      
   Code      Yagnesh Mehta      04/05/12 01:11      
      Established Synchronization But.......      Yagnesh Mehta      04/05/12 01:41      
      ?      Stefan KAnev      04/05/12 10:29      
         Not function      Yagnesh Mehta      04/05/12 21:53      
      Code Does not make sense      Andy Neil      04/05/12 23:41      
         for understanding only....      Yagnesh Mehta      04/06/12 01:29      
            Confusion, more like      Andy Neil      04/06/12 05:29      
         Formating ....      Yagnesh Mehta      04/06/12 01:33      
            It is always, but especially when ....      Erik Malund      04/06/12 08:07      
         Problem Resolved      Yagnesh Mehta      04/06/12 22:23      
            Please share      Andy Neil      04/07/12 04:15      
               Ya sure....      Yagnesh Mehta      04/07/12 06:23      

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